No problems, they stay on the headphones and in the ears like the Sony originals. And he thought it is not that much convenient. Great mix. You have a choice of 4 different faces for the main screen, and the brightness level can be adjusted. There are 3 holes to adjust where they fit and each hole is a different size, from where it will fit, barely fit and a pin hole size. So far battery life is great. Keeps my front door main entrance free of clutter. They are a little long. This lasted a full two hours. The strap is set in such a way that it sits right where my toes bend and is not comfortable when walking just a little faster than normal.